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'''Django models for BCFG reports'''
from django.db import models
from datetime import datetime, timedelta
KIND_CHOICES = (
#These are the kinds of config elements
('ConfigFile', 'ConfigFile'),
('Package', 'Package'),
('Service', 'Service'),
('SymLink', 'SymLink'),
('Directory', 'Directory'),
('Permissions','Permissions'),
)
PING_CHOICES = (
#These are possible ping states
('Up (Y)', 'Y'),
('Down (N)', 'N')
)
class Client(models.Model):
'''object representing every client we have seen stats for'''
creation = models.DateTimeField()
name = models.CharField(maxlength=128, core=True)
current_interaction = models.ForeignKey('Interaction',
null=True, blank=True,
related_name="parent_client")
expiration = models.DateTimeField()
def __str__(self):
return self.name
class Admin:
pass
class Metadata(models.Model):
'''insert magical interface to client metadata here'''
client = models.ForeignKey(Client)
timestamp = models.DateTimeField()
def __str__(self):
return self.timestamp
class Repository(models.Model):
'''insert magical interface to subversioned repository here'''
timestamp = models.DateTimeField()
def __str__(self):
return self.timestamp
class Ping(models.Model):
'''represents a ping of a client (sparsely)'''
client = models.ForeignKey(Client, related_name="pings")
starttime = models.DateTimeField()
endtime = models.DateTimeField()
status = models.CharField(maxlength=4, choices=PING_CHOICES)#up/down
class Meta:
get_latest_by = 'endtime'
class InteractiveManager(models.Manager):
'''manages interactions objects'''
'''returns most recent interaction as of specified timestamp in format:
'2006-01-01 00:00:00' or 'now' or None->'now' '''
def interaction_per_client(self, maxdate = None):
from django.db import connection
cursor = connection.cursor()
#in order to prevent traceback when zero records are returned.
#this could mask some database errors
try:
if (maxdate == 'now' or maxdate == None):
cursor.execute("select reports_interaction.id, x.client_id from (select client_id, MAX(timestamp) "+
"as timer from reports_interaction GROUP BY client_id) x, reports_interaction where "+
"reports_interaction.client_id = x.client_id AND reports_interaction.timestamp = x.timer")
else:
cursor.execute("select reports_interaction.id, x.client_id from (select client_id, timestamp, MAX(timestamp) "+
"as timer from reports_interaction WHERE timestamp < %s GROUP BY client_id) x, reports_interaction where "+
"reports_interaction.client_id = x.client_id AND reports_interaction.timestamp = x.timer",
[maxdate])
in_idents = [item[0] for item in cursor.fetchall()]
except:
in_idents = []
return self.filter(id__in = in_idents)
class Interaction(models.Model):
'''Models each reconfiguration operation interaction between client and server'''
client = models.ForeignKey(Client, related_name="interactions", core=True)
timestamp = models.DateTimeField()#Timestamp for this record
state = models.CharField(maxlength=32)#good/bad/modified/etc
repo_revision = models.IntegerField()#repo revision at time of interaction
client_version = models.CharField(maxlength=32)#Client Version
pingable = models.BooleanField()#This needs to change
goodcount = models.IntegerField()#of good config-items
totalcount = models.IntegerField()#of total config-items
def __str__(self):
return "With " + self.client.name + " @ " + self.timestamp.isoformat()
def percentgood(self):
if not self.totalcount == 0:
return (self.goodcount/float(self.totalcount))*100
else:
return 0
def percentbad(self):
if not self.totalcount == 0:
return ((self.totalcount-self.goodcount)/(float(self.totalcount)))*100
else:
return 0
def isclean(self):
if (self.bad_items.count() == 0 and self.goodcount == self.totalcount):
#if (self.state == "good"):
return True
else:
return False
def isstale(self):
if (self == self.client.current_interaction):#Is Mostrecent
if(datetime.now()-self.timestamp > timedelta(hours=25) ):
return True
else:
return False
else:
#Search for subsequent Interaction for this client
#Check if it happened more than 25 hrs ago.
if (self.client.interactions.filter(timestamp__gt=self.timestamp)
.order_by('timestamp')[0].timestamp -
self.timestamp > timedelta(hours=25)):
return True
else:
return False
def save(self):
super(Interaction, self).save() #call the real save...
self.client.current_interaction = self.client.interactions.latest()
self.client.save()#save again post update
objects = InteractiveManager()
class Admin:
list_display = ('client', 'timestamp', 'state')
list_filter = ['client', 'timestamp']
pass
class Meta:
get_latest_by = 'timestamp'
class Reason(models.Model):
'''reason why modified or bad entry did not verify, or changed'''
owner = models.TextField(maxlength=128, blank=True)
current_owner = models.TextField(maxlength=128, blank=True)
group = models.TextField(maxlength=128, blank=True)
current_group = models.TextField(maxlength=128, blank=True)
perms = models.TextField(maxlength=4, blank=True)#txt fixes typing issue
current_perms = models.TextField(maxlength=4, blank=True)
status = models.TextField(maxlength=3, blank=True)#on/off/(None)
current_status = models.TextField(maxlength=1, blank=True)#on/off/(None)
to = models.TextField(maxlength=256, blank=True)
current_to = models.TextField(maxlength=256, blank=True)
version = models.TextField(maxlength=128, blank=True)
current_version = models.TextField(maxlength=128, blank=True)
current_exists = models.BooleanField()#False means its missing. Default True
current_diff = models.TextField(maxlength=1280, blank=True)
def _str_(self):
return "Reason"
class Modified(models.Model):
'''Modified configuration element'''
interactions = models.ManyToManyField(Interaction, related_name="modified_items")
name = models.CharField(maxlength=128, core=True)
kind = models.CharField(maxlength=16, choices=KIND_CHOICES)
critical = models.BooleanField()
reason = models.ForeignKey(Reason)
def __str__(self):
return self.name
class Extra(models.Model):
'''Extra configuration element'''
interactions = models.ManyToManyField(Interaction, related_name="extra_items")
name = models.CharField(maxlength=128, core=True)
kind = models.CharField(maxlength=16, choices=KIND_CHOICES)
critical = models.BooleanField()
reason = models.ForeignKey(Reason)
def __str__(self):
return self.name
class Bad(models.Model):
'''Bad configuration element'''
interactions = models.ManyToManyField(Interaction, related_name="bad_items")
name = models.CharField(maxlength=128, core=True)
kind = models.CharField(maxlength=16, choices=KIND_CHOICES)
critical = models.BooleanField()
reason = models.ForeignKey(Reason)
def __str__(self):
return self.name
class PerformanceManager(models.Manager):
'''Provides ability to effectively query for performance information
It is possible this should move to the view'''
#Date format for maxdate: '2006-01-01 00:00:00'
def performance_per_client(self, maxdate = None):
from django.db import connection
cursor = connection.cursor()
if (maxdate == 'now' or maxdate == None):
cursor.execute("SELECT reports_client.name, reports_performance.metric, reports_performance.value "+
"FROM reports_performance, reports_performance_interaction, reports_client WHERE ( "+
"reports_client.current_interaction_id = reports_performance_interaction.interaction_id AND "+
"reports_performance.id = reports_performance_interaction.performance_id)")
else:
cursor.execute("select reports_client.name, reports_performance.metric, "+
"reports_performance.value from (Select reports_interaction.client_id as client_id, "+
"MAX(reports_interaction.timestamp) as timestamp from reports_interaction where "+
"timestamp < %s GROUP BY reports_interaction.client_id) x, reports_client, "+
"reports_interaction, reports_performance, reports_performance_interaction where "+
"reports_client.id = x.client_id AND x.timestamp = reports_interaction.timestamp AND "+
"x.client_id = reports_interaction.client_id AND reports_performance.id = "+
"reports_performance_interaction.performance_id AND "+
"reports_performance_interaction.interaction_id = reports_interaction.id", [maxdate])
results = {}
for row in cursor.fetchall():
try:
results[row[0]].__setitem__(row[1], row[2])
except KeyError:
results[row[0]] = {row[1]:row[2]}
return results
#performance metrics, models a performance-metric-item
class Performance(models.Model):
'''Object representing performance data for any interaction'''
interaction = models.ManyToManyField(Interaction, related_name="performance_items")
metric = models.CharField(maxlength=128, core=True)
value = models.FloatField(max_digits=32, decimal_places=16)
def __str__(self):
return self.metric
objects = PerformanceManager()
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